So far, I have not used the K3+2m transverter on weak-eme CW, but when I did quite a bit of eme-CW several years before the advent of digital-eme I found the use of NR and DSP narrow BW filters (100-200 Hz) necessary to copy CW. This was using my FT-847 which has a more limited DSP menu than the K3.
Running the NR also helped weak 2m SSB somewhat, but there occasionally was a "muddying effect" to the audio characteristics that sometimes was counter-productive to good hearing. I have used the K3 NR on hard to copy SSB on HF and a little bit on 2m-SSB and did some A/B comparisons with my FT-847 NR and can say that even the default settings on the K3 were decidedly clearer to listen to. In my opinion this helps my ability to copy and consider that to be an apparent improvement in SNR (though may be more the psychoacoustical effect?). Whatever, it helps my reception. NR on HF has a nice general quieting effect on HF even with strong signals. When I get my 2m-eme system back in the air after some maintenance and upgrades, it will be quite interesting to play with the NR and AGC settings to find best settings for weak eme-CW and weak VHF-SSB. I have already used the APF on some uncopyable CW and it brings it nicely up to a point of being able to copy (I expect this to be super for eme-CW). On SSB, NR does seem to be more effective with some voices than others, so it is not always helpful. Same as using narrow BW often does not help voice comprehension. The customizing ability for the features of the K3 make it much more effective, once one determines those settings. 73, Ed - KL7UW, WD2XSH/45 ====================================== BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kW?, 144-1.4kw, 432-100w, 1296-testing*, 3400-? DUBUS Magazine USA Rep [email protected] ====================================== ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
